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Stack Sizer

Size a self-hosted stack from official sources.

Apps

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Load and options

Langflow

v1.0.0
Load

Up to 5 people building flows, up to 50 flows, ~5,000 flow runs/day over the API, up to 5 GB of uploaded files and local knowledge bases; one worker.

Options

No options change this app's resources.

Recommended resources

App requirements + system baseline + safety headroom. Nothing else is added, and nothing is rounded to a machine size.

vCPU 3.72, RAM 8.7 GiB, Disk 78.036 GiB

vCPU3.72
RAM8.7GiB
Disk78.036GiB
Breakdown
LineFromvCPURAM (GiB)Disk (GiB)Sources
LangflowLangflow (editor and API) · Medium load128.15712345
LangflowPostgreSQL · Medium load2451.56789101112
System baselineOperating system, Container runtime (Docker Engine, containerd), System logs (journald), plus logs for 2 containers0.11.258.2131415161718
Safety headroomvCPU 20%, RAM 20%, disk 15% of apps + baseline0.621.4510.1791914201721
Recommended total3.728.778.036
Sources
  1. Langflow Docs: Best practices on Kubernetes (IDE: frontend 512Mi/0.3 CPU + backend 1Gi/0.5 CPU; runtime: 2Gi/1 CPU per instance) (Langflow, read 14 Oct 2026)
  2. Langflow Docs: Install Langflow (minimum dual-core CPU and 2 GB RAM; recommended multi-core and at least 4 GB RAM) (Langflow, read 14 Oct 2026)
  3. Docker Hub manifest of langflowai/langflow:1.12.6 (linux/amd64): 801,422,369 B compressed; 14 layers decompressed and counted: 2,588,674,048 B (Langflow, read 14 Oct 2026)
  4. Docker: the containerd image store keeps image layers both compressed and uncompressed (Langflow, read 14 Oct 2026)
  5. Langflow Docs: Manage files (local storage in the config directory, 1024 MB default upload limit) (Langflow, read 14 Oct 2026)
  6. PostgreSQL 18 documentation: 19.4 Resource Consumption (Langflow, read 10 Oct 2026)
  7. PostgreSQL 18 documentation: 19.3 Connections and Authentication (Langflow, read 10 Oct 2026)
  8. PostgreSQL 18 documentation: 19.10 Vacuuming (autovacuum settings) (Langflow, read 10 Oct 2026)
  9. PostgreSQL 18 documentation: 19.5 Write Ahead Log (max_wal_size) (Langflow, read 10 Oct 2026)
  10. PostgreSQL 18 documentation: 51.2 How Connections Are Established (Langflow, read 10 Oct 2026)
  11. Docker Official Image postgres: documentation (docker-library/docs) (Langflow, read 10 Oct 2026)
  12. Docker Hub: library/postgres tag 18.6 (compressed image sizes) (Langflow, read 10 Oct 2026)
  13. Ubuntu Server: System requirements (Sizing policy, read 10 Oct 2026)
  14. Google Kubernetes Engine: About GKE node sizing (Sizing policy, read 10 Oct 2026)
  15. ANAROQ measurement: dockerd and containerd at rest (Ubuntu 24.04, Docker 29.8.2) (Sizing policy, read 10 Oct 2026)
  16. Docker Community Forums: Docker resource usage & overhead (Sizing policy, read 10 Oct 2026)
  17. journald.conf(5), Ubuntu Manpages (Sizing policy, read 10 Oct 2026)
  18. Docker Docs: Local file logging driver (Sizing policy, read 10 Oct 2026)
  19. AWS Compute Optimizer: Rightsizing recommendation preferences (Sizing policy, read 10 Oct 2026)
  20. Kubernetes: Node-pressure Eviction (Sizing policy, read 10 Oct 2026)
  21. mke2fs(8), Ubuntu Manpages (Sizing policy, read 10 Oct 2026)
Basis
Catalog release
2026.10.10
Sizing policy
2026.10.0
Profile Langflow
1.0.0

How the numbers are built

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